{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["cell type", "DNA", "cell line", "RNA", "protein"], "input": "We have previously reported the presence of a transcriptional control element with the properties of a silencer extending from -392 to -177 bp relative to the cap site of the human epsilon-globin-encoding gene [Cao et al., Proc.Natl.Acad.Sci.USA 86 (1989) 5306-5309]."}
{"cell type": [], "DNA": ["transcriptional control element", "silencer", "-392 to -177 bp", "cap site", "human epsilon-globin-encoding gene"], "cell line": [], "RNA": [], "protein": []}